Your screensaver is great, but it lacks the most important feature for me: Ken Burns Effect also known as Pan&Zoom transition.

You provide hundrets of transitions where each of them (except the fadings) are as useless as silly transition effects in powerpoint.
In my eyes the only transition effect, beyond simple fading that improves the quality of a slideshow is the so called Ken Burns Effect. Especially when accompanied by music it makes a simple slideshow almost appear like a movie.